Metal-working machine.



Patented Apr. 13, 1909.

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D. M. WATKINS. METAL WORKING MACHINE. APPLICATION FILED mm: 1a, 1906.

- Patented Apr. 13, 1909.

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D. WATKINS. METAL WORKING MACHINE. APPLIOATION- FILED JUNE 18, 1906.

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UNITED STATES PATENT @FFEQE.

DAVID M. WATKINS, OF PROVIDENCE, RHODE ISLAND.

METAL-WORKING MACHINE.

Application filed June 18, 1906.

To all whom it may concern:

Be it known that I, DAVID M. W'ATKrNs, of Providence, county ofProvidence, and State of Rhode Island, have invented certain new anduseful Improvements in Metal- Working Machines; and I do hereby declarethe following specification, taken in connection with the accompanyingdrawings, formeXact description thereof.

The invention relates to metal working machines in which the work isacted upon by a cutter and more especially to machines of this characterwhich are designed and adapted for finishing ornamental metal stock,such as used in the manufacture of jewelry. In the manufacture of suchornamental metal stock the metal in the form of a strip is first passedbetween a male and female roll having the desired ornamental designformed on. the periphery thereof. This operation produces the designupon the strip of metal with the ornamental figured part raised and thewaste metal not used in the formation of the design depressed or sunkbelow the figured portion. Heretofore these strips after leaving therolls which form the design have been finished by submitting them to theaction of a press which punches out the waste metal and leaves thedesign perforated as desired. This method of finishing the stock hasbeen found objectionable, as it is a slow and eX- pensive operation. Thestock has to be brought to a stand during the punching operation, thuscausing the feed of the stock through the press to be a slowintermittent feed. Furthermore different dies or punches are necessaryfor different parts of the design to be finished, a great many of whichrequire considerable time and expense to produce.

It is the object of the present invention to overcome these objectionsand produce a machine in which the stock is continuously fed by means ofa rotary die ring and is operated upon by a rotary cutter which removesthe waste metal from said stock at the same time the stock is being fedthrough the machine.

The features of the invention will be more clearly understood byreferring to the accompanying drawings and description of the machineand are clearly set forth in the claims.

In the drawings, Figure 1 is a front eleva- Specification of LettersPatent.

l able legs or supports 2. ing a part of the same, to be a full, clear,and

Patented April 13, 1909.

Serial No. 322,122.

tion of the machine; Fig. 2 is a plan view; Fig. 8 is a vertical sectionthrough the cutter spindle; Fig. 4 is a detail, and is a verticalsection through the adjustable workrest.

Referring to the drawings, 1 is the frame of the machine which ismounted upon suit- The frame 1 is provided with vertical ways 3 on whichis mounted the knee 4 which is adjusted by means of the screw 5 andhand-wheel 6. ihe hand-wheel is provided with an adjustable stop 7adapted to engage a fixed stop 8 secured to the frame 1 and limit themovement of said hand-wheel 6 in one direction. Ehe fixed stop 8 isspring actuated, and the ends of both of said stops 7 and 8 are beveledso that the stop 7 will pass by the stop 8 when the wheel 6 is moved inthe other direction. 'li'he fixed stop 8 is provided with a projection 9by means of which said stop may be raised so that the stop 7 will notengage the same, and the hand-wheel 6 may then be moved in eitherdirection at will, which is desirable in setting the machine for a givenpiece of work.

Dovetailed on the knee 4 is the carriage 10 in which is mounted thecutter spindle 11 can rying a cutter 12 on one end and a driving pulley13 on the other end thereof.

Mounted in the top of the frame 1 and directly over the cutter spindleis a shaft 14 provided at one end with a flanged wheel 15 and at itsother end with a pulley 16, wormwheel 17 and cam-wheel 18 provided withthe cam-groove 19 upon the periphery thereof. The cam groove 19 isengaged by a stud 20 secured to the carriage 10 so that the cam-wheel 18when revolved will reciprocate the cutter-spindle 11.

Mounted in the free ends of arms 21 and 22, which are secured to theframe 1, is a shaft 23 having a pulley 24 loosely mounted thereon andprovided with a clutch member 25 formed on the hub thereof. The pulley24 is driven by a belt 24 from any suitable source. The clutch member 25is adapted to be engaged and disengaged by the movable clutch member 26which is keyed to the shaft 23. One end of said shaft 23 is rovided witha hand-wheel 27 and the other end with a bevel-gear 28 which meshes witha bevel-gear 29 on the end of a shaft 30 which carries a worm-gear 31arranged to engage the worm-wheel 17 and drive the shaft 14.

Mounted in the free end of an arm 32 secured to the frame 1 is a shaft33 having a pulley 34 on one end thereof which is driven by a belt 35passing over the pulley 16 on the shaft 14. Mounted on the other end ofthe shaft 33 is a flanged wheel or drum 36 on which the finished stockis wound.

Mounted to slide in suitable ways on the brackets 37, which are securedto the frame 1., are two blocks 38 provided with standards 39 in whichare pivoted arms 40 which serve as rests for the work being operatedupon. The free ends of the arms 40 overlie the cutter 12 and arearranged to rest upon spring pressed pins 41 which are provided withsuitable stops for limiting the upward and downward movements of saidarms. The blocks 38 are adapted to be moved toward or away from thecutter 12 by means of the hand-wheels 42, secured to the screw-rods 42,which screw rods are held against lengthwise movement and engage ascrew-threaded opening in each of the projections '38, as shown in Fig.5., Said blocks are provided with adjustable stops 43 adapted to engageprojections 44 on the brackets 37 and thereby limit the movement of thearms 40 and prevent said arms from coming in contact with the cutter 12.

In operating the machine a die-ring 45, having the design of the stockto be operated upon cut or otherwise formed upon the outer periphery orface thereof, is clamped upon the flanged wheel 15 by means of the cap46 and nut 47, said ring projecting beyond the flange on the wheel 15,as shown in Fig. The stock 48 is placed upon the arms 40 face upward,and said arms are advanced toward the cutter 12 which brings the face ofsaid stock into engagement with the ring 45, the configuration of thedesign upon the stock intermeshing with the configuration of the samedesign out in the face of said ring 45. The cutter 12 is then raised bymeans of the hand-wheel 6 so as to engage and operate upon the back ofthe stock 48. Power is then applied to the pulley 13 to drive thecutter 1. 2 and the pulley 24 which, through the medium of the clutchmembers 25 and 26, shaft 23, bevel-gears 28 and 29, shaft 30, wormgear31, worm-wheel 17, shaft 14 and flanged wheel 15, rotates the ring 45and automatically feeds the stock 48 while the cutter 12 is operatingupon the same to remove the waste part thereof. The cam-wheel 18operating upon the stud 20 reciprocates the carriage 10 and the cutter12, so that the cutting edges of said cutter will wear evenly throughouttheir entire length, and the cutter 12 can be changed for differentwidths of stock. While the feeding of the stock 48 can be startedautomatically if desired, and at the same time the cutter 12 is started,it is preferred to start the feed of the stock by hand cutter can becarefully adjusted to remove the proper amount of the stock before thepower is applied to the feed mechanism and there is less liability ofbreaking or injuring the stock. When it is desired to start the feed byhand the clutch 26 is disengaged from the clutch 25 before the power isapplied to the machine and the feed mechanism is operated by thehand-wheel 27 until the proper adjustments are effected, and then theclutch 26 is moved into engagement with the clutch 25 and the feed isperformed automatically. After passing over the cutter 12 the stock 48disengages the ring 45 and is wound up on the drum 36, which is drivenfrom the pulley 16 on the shaft 14. It will thus be seen that strips ofstock of any desired length may be operated upon, and the strips areautomatic ally and continuously fed through the machine during theremoval of the waste stock and the finished stock is wound into a coilof any desired size.

In order to prevent the fine cutting produced by the cutter 12 fromentering and filling the recesses in the design on the ring 45 a brush49 is mounted on a rock-shaft 50 so as to overlie said ring 45. Therock-shaft 50 is mounted in a bracket 51 secured upon the arm 21 and isprovided with an arm .52 having a roller 53 mounted in the free endthereof and arranged to be held by means of a suitable spring 54 inengagement with a tappet-wheel 55 secured to the hub of the pulley 24.As wil be seen, the revolution of the pulley 24 and the tappet-wheel 55will cause the brush 49 to be rocked and inter mitt-ently strike theface of the die-ring 45 and remove any of the cuttings that may havecaught in the configuration of the design formed thereon.

W hat I claim as my invention and desire to secure by Letters Patent is:

1. In a machine of the class described, the combination of acutter-spindle, a cutter mounted thereon, a shaft mounted parallel withsaid cutter-spindle, a die-ring mounted on said shaft op osite saidcutter, and means for automatical y reciprocating said cutter across theface of said die-ring, substantially as described.

2. In a machine of the class described, the combination of acutter-spindle, a cutter mounted thereon, a shaft mounted parallel withsaid cutter-spindle, a die-ring mounted on said shaft opposite saidcutter, means for moving said cutter transversely toward and away fromsaid diering, and means for automatically reciprocating said cutteracross the face of said die-ring, substantially as de scribed.

3. In a machine of the class described, the combination, with asuitablev frame, of a cut ter mounted therein, a die-ring mounted inoperative relation to said cutter, and auto 65 and then apply the power,as by so doing the matically adjustable means for holding the work inengagement with said die-ring while being operated upon by the cutter,substantially as described.

4. In a machine of the class described, the combination, with a suitableframe, of a cutter mounted therein, a die-ring mounted above saidcutter, and spring actuated means for holding the work in engagementwith the die-ring while being operated upon by the cutter, substantiallyas described.

5. In a machine of the class described, the combination, with a suitableframe, of a cutter mounted therein, a die-ring mounted above said cutterand having a design formed on the periphery thereof, and spring actuatedarms engaging the work to hold said work in engagement with the designon said die-ring, substantially as described.

6. In a machine of the class described, the combination, with a suitableframe, of a cutter mounted therein, a die-ring mounted above saidcutter, means for rotating said cutter and die-ring, and an arm pivotedto a suitable standard and having its free end arranged and adapted toextend between said cutter and die-ring, substantially as described.

7. In a machine of the class described, the

combination, with a suitable frame, of a cutter mounted therein, adie-ring mounted above said cutter, means for rotating said cutter anddie-ring, a block mounted to slide in suitable ways, an arm pivoted tosaid block and having its free end arranged and adapted to extendbetween said cutter and die-ring, and means for advancing and retractingsaid block with relation to said cutter and die-ring, substantially asdescribed.

8. In a machine of the class described, the combination, with a suitableframe, of a rotary cutter, a die-ring having its axis parallel with theaxis of said cutter, a block mounted to slide in suitable ways, an armpivoted to said block, means for advancing said block to bring the freeend of said pivoted arm between the periphery of said cutter anddie-ring, and means for limiting the advancing movement of said block,substantially as described.

9. In a machine of the class described, the combination, with a suitableframe, of a rotary cutter, a rotary die-ring having its axis parallelwith the axis of said cutter, two pivoted arms, one of said arms beinglocated upon one side ofthe axis of said cutter and the other arm uponthe opposite side of said axis, the free end of each of said armsextending between the periphery of the cutter and die-ring, and meansfor moving said arms toward or away from each other, substantially asdescribed.

10. In a machine of the class described, the combination, with asuitable frame, of a rotary cutter, a rotary die-ring having its axisparallel with the axis of said cutter, a pivoted arm having its free endlocated between the periphery of said cutter and diering and restingupon a spring pressed pin, substantially as described.

1 1. In a machine of the class described, the combination, with asuitable frame, of a diering mounted to rotatetherein, a pulley mountedto drive said die-ring, a brush mounted on said frame and overlying theperiphery of said die-ring, and means carried by the driving pulley foroperating said brush to intermittently strike the periphery of said die,substantially as described.

12. In a machine of the character described, the combination, with asuitable frame, of a rotary die-ring, a brush mounted adjacent saiddie-ring, and means for operat ing said brush to intermittently strikethe periphery of said die-ring.

DAVID M. WATKINS.

Witnesses W. H. TI-IURSTON. J. H. THURSTON.

